Login as root, then do:
wget https://raw.githubusercontent.com/IeSua-lab/community-repo/scriptnodeSetup/community-contributions/scriptnodeSetup/joystream-node-install.sh
./joystream-node-install.sh
Script will install the node. At the end of the installation, it will ask you what to name your node.
Works as root and user.
GIF file (how it works): https://imgur.com/a/lliuWZk